Mesa (master): radv: fixup tess eval shader when combined.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 5bc5e07d81c8eccb3645260ca4072e652d0cf052
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5bc5e07d81c8eccb3645260ca4072e652d0cf052

Author: Dave Airlie <airlied at redhat.com>
Date:   Fri Oct 20 03:45:51 2017 +0100

radv: fixup tess eval shader when combined.

This fixes some access to the tess eval shader when it's combined
with geometry on gfx9.

This is a review of Bas's commit:
radv: Prevent crashing by accessing TES for VGT reuse depth.

Signed-off-by: Dave Airlie <airlied at redhat.com>

---

 src/amd/vulkan/radv_cmd_buffer.c |  5 +++++
 src/amd/vulkan/radv_pipeline.c   | 24 ++++++++++++++++++------
 2 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/src/amd/vulkan/radv_cmd_buffer.c b/src/amd/vulkan/radv_cmd_buffer.c
index cc1b9494fb..a62aa6ccb9 100644
--- a/src/amd/vulkan/radv_cmd_buffer.c
+++ b/src/amd/vulkan/radv_cmd_buffer.c
@@ -500,6 +500,11 @@ radv_lookup_user_sgpr(struct radv_pipeline *pipeline,
 			return &pipeline->shaders[MESA_SHADER_TESS_CTRL]->info.user_sgprs_locs.shader_data[idx];
 		if (pipeline->shaders[MESA_SHADER_GEOMETRY])
 			return &pipeline->shaders[MESA_SHADER_GEOMETRY]->info.user_sgprs_locs.shader_data[idx];
+	} else if (stage == MESA_SHADER_TESS_EVAL) {
+		if (pipeline->shaders[MESA_SHADER_TESS_EVAL])
+			return &pipeline->shaders[MESA_SHADER_TESS_EVAL]->info.user_sgprs_locs.shader_data[idx];
+		if (pipeline->shaders[MESA_SHADER_GEOMETRY])
+			return &pipeline->shaders[MESA_SHADER_GEOMETRY]->info.user_sgprs_locs.shader_data[idx];
 	}
 	return &pipeline->shaders[stage]->info.user_sgprs_locs.shader_data[idx];
 }
diff --git a/src/amd/vulkan/radv_pipeline.c b/src/amd/vulkan/radv_pipeline.c
index fa87a458b0..21265c45df 100644
--- a/src/amd/vulkan/radv_pipeline.c
+++ b/src/amd/vulkan/radv_pipeline.c
@@ -1173,9 +1173,13 @@ calculate_gs_ring_sizes(struct radv_pipeline *pipeline)
 	/* The maximum size is 63.999 MB per SE. */
 	unsigned max_size = ((unsigned)(63.999 * 1024 * 1024) & ~255) * num_se;
 	struct ac_shader_variant_info *gs_info = &pipeline->shaders[MESA_SHADER_GEOMETRY]->info;
-	struct ac_es_output_info *es_info = radv_pipeline_has_tess(pipeline) ?
-		&pipeline->shaders[MESA_SHADER_TESS_EVAL]->info.tes.es_info :
-		&pipeline->shaders[MESA_SHADER_VERTEX]->info.vs.es_info;
+	struct ac_es_output_info *es_info;
+	if (pipeline->device->physical_device->rad_info.chip_class >= GFX9) 
+		es_info = radv_pipeline_has_tess(pipeline) ? &gs_info->tes.es_info : &gs_info->vs.es_info;
+	else
+		es_info = radv_pipeline_has_tess(pipeline) ?
+			&pipeline->shaders[MESA_SHADER_TESS_EVAL]->info.tes.es_info :
+			&pipeline->shaders[MESA_SHADER_VERTEX]->info.vs.es_info;
 
 	/* Calculate the minimum size. */
 	unsigned min_esgs_ring_size = align(es_info->esgs_itemsize * gs_vertex_reuse *
@@ -1217,6 +1221,14 @@ radv_get_vertex_shader(struct radv_pipeline *pipeline)
 	return pipeline->shaders[MESA_SHADER_GEOMETRY];
 }
 
+static struct radv_shader_variant *
+radv_get_tess_eval_shader(struct radv_pipeline *pipeline)
+{
+	if (pipeline->shaders[MESA_SHADER_TESS_EVAL])
+		return pipeline->shaders[MESA_SHADER_TESS_EVAL];
+	return pipeline->shaders[MESA_SHADER_GEOMETRY];
+}
+
 static void
 calculate_tess_state(struct radv_pipeline *pipeline,
 		     const VkGraphicsPipelineCreateInfo *pCreateInfo)
@@ -1309,7 +1321,7 @@ calculate_tess_state(struct radv_pipeline *pipeline,
 	tess->num_patches = num_patches;
 	tess->num_tcs_input_cp = num_tcs_input_cp;
 
-	struct radv_shader_variant *tes = pipeline->shaders[MESA_SHADER_TESS_EVAL];
+	struct radv_shader_variant *tes = radv_get_tess_eval_shader(pipeline);
 	unsigned type = 0, partitioning = 0, topology = 0, distribution_mode = 0;
 
 	switch (tes->info.tes.primitive_mode) {
@@ -1961,7 +1973,7 @@ radv_pipeline_init(struct radv_pipeline *pipeline,
 	if (radv_pipeline_has_tess(pipeline)) {
 		/* SWITCH_ON_EOI must be set if PrimID is used. */
 		if (pipeline->shaders[MESA_SHADER_TESS_CTRL]->info.tcs.uses_prim_id ||
-		    pipeline->shaders[MESA_SHADER_TESS_EVAL]->info.tes.uses_prim_id)
+		    radv_get_tess_eval_shader(pipeline)->info.tes.uses_prim_id)
 			pipeline->graphics.ia_switch_on_eoi = true;
 	}
 
@@ -2044,7 +2056,7 @@ radv_pipeline_init(struct radv_pipeline *pipeline,
 
 	pipeline->graphics.vtx_reuse_depth = 30;
 	if (radv_pipeline_has_tess(pipeline) &&
-	    pipeline->shaders[MESA_SHADER_TESS_EVAL]->info.tes.spacing == TESS_SPACING_FRACTIONAL_ODD) {
+	    radv_get_tess_eval_shader(pipeline)->info.tes.spacing == TESS_SPACING_FRACTIONAL_ODD) {
 		pipeline->graphics.vtx_reuse_depth = 14;
 	}